This stranger-than-fiction true crime thriller from OMGA and All3 Media America explores the phenomenon of phrogging — people secretly living inside someone else’s home. From the man in the attic to the creeper in the crawl space, each episode features two first-hand accounts of survivors sharing the most skin crawling, twisted, and truly terrifying stories imaginable. Viewers will be inside the victim's mind as denial and disbelief turn to the spine-tingling realization that he or she is not alone. Along with interviews and key archive materials, cinematic recreations bring the clues and confrontations to life. Like the story of the boy that hid inside the walls of a family home terrorizing teenage girls for months, this series proves that yes, there actually is a monster under the bed.